Document And Entity Information - shares	1 Months Ended
	Mar. 31, 2023	Jul. 10, 2023
Document Information Line Items
Entity Registrant Name	Inflection Point Acquisition Corp. II
Document Type	10-Q
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001970622
Entity Current Reporting Status	No
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Mar. 31, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q1
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Shell Company	true
Entity Ex Transition Period	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-41711
Entity Incorporation, State or Country Code	E9
Entity Tax Identification Number	00-0000000
Entity Address, Address Line One	167 Madison Avenue
Entity Address, Address Line Two	Suite 205 #1017
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10016
City Area Code	(212)
Local Phone Number	476-6908
Entity Interactive Data Current	Yes
Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant
Document Information Line Items
Trading Symbol	IPXXU
Title of 12(b) Security	Units, each consisting of one Class A ordinary share, $0.0001 par value, and one-half of one redeemable warrant
Security Exchange Name	NASDAQ
Class A ordinary shares, par value $0.0001 par value
Document Information Line Items
Trading Symbol	IPXX
Title of 12(b) Security	Class A ordinary shares, par value $0.0001 par value
Security Exchange Name	NASDAQ
Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share
Document Information Line Items
Trading Symbol	IPXXW
Title of 12(b) Security	Warrants, each whole warrant exercisable for one Class A ordinary share at an exercise price of $11.50 per share
Security Exchange Name	NASDAQ
Class A Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		25,000,000
Class B Ordinary Shares
Document Information Line Items
Entity Common Stock, Shares Outstanding		6,250,000